SUMMARY:
The fan is an Everflow Model #R127015DU – a 70 x 15mm unit rated at 26 cfm @ 4200 rpm. I found it to be tolerably quiet – I measured its noise at 62 dBA with a Radio Shack sound meter 8″ from the fan’s intake, substantially less than a Delta 38 (about 69 dBA). It’s also safe to use a motherboard fan header.
In summary, a fairly conventional aluminum extrusion heatsink with a very secure and easy to use clip.
The IceStream was first tested on the CPU Die Simulator which gives results that are unaffected by motherboard influences. I then tested it on a Lucky Star P4A845D with a modified P4 1500 to read CPU case temps, as an example of what users might see on their systems.
Heatsink | Die Temp | Ambient Temp | Delta | C/W |
IceStream | 53.7 C | 22.4 C | 31.3 C | 0.43 |
CPU/Motherboard | CPU Case Temp | Ambient Temp | Delta | C/W | MBM Temp |
P4 1500, Lucky Star P4A845D | 36.8 C | 23.5 C | 13.3 | 0.23 | 31 C |
C/W = Delta / CPU Watts
Interpreting C/W: For every watt (CPUw) that the CPU
consumes, the HSF will limit the CPU’s temperature rise to (C/W x CPUw)
plus the temperature at the HSF’s fan inlet. For example, at an ambient temp of 25 C, a C/W of 0.25 with a CPU radiating 50 watts means that CPU temp will increase 50 x 0.25 = 12.5 C over ambient temp, or 37.5 C. The lower the C/W, the better.
Motherboard results results place the IceStream in the mid rank of heatsinks (Heatsink Ranking).
Thanks again to Crazy PC for sending this our way.
Be the first to comment